LinearLayout $LayoutParams无法强制转换为android.support.v4.widget.DrawerLayout $LayoutParams

概述我正在尝试做导航抽屉选项. 这是我的xml： <?xml version="1.0" encoding="utf-8"?><android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/drawer_layout" 我正在尝试做导航抽屉选项.

这是我的xml：

<?xml version="1.0" enCoding="utf-8"?><androID.support.v4.Widget.DrawerLayout    xmlns:androID="http://schemas.androID.com/apk/res/androID"    androID:ID="@+ID/drawer_layout"    androID:layout_wIDth="match_parent"    androID:layout_height="match_parent">    <linearLayout        androID:layout_wIDth="match_parent"        androID:layout_height="wrap_content"        androID:orIEntation="vertical">        <button             androID:ID="@+ID/sendnewmessages"             androID:layout_wIDth="wrap_content"             androID:layout_height="30dp"             androID:background="@drawable/nothere"             androID:gravity="center_horizontal"             androID:shadowcolor="@androID:color/black"             androID:shadowDx="1"             androID:shadowDy="1"             androID:shadowRadius="1"             androID:text="Send New Messages"             androID:textAlignment="center"             androID:textcolor="@androID:color/black" />        <EditText             androID:ID="@+ID/searchmessage"             androID:layout_height="40dp"             androID:layout_wIDth="200dp"             androID:gravity="center"             androID:hint="Search Messages"/>        <ListVIEw            androID:ID="@+ID/ListvIEw"            androID:layout_wIDth="match_parent"            androID:layout_height="wrap_content">        </ListVIEw>        <ListVIEw androID:ID="@+ID/left_drawer"            androID:layout_wIDth="240dp"            androID:layout_height="match_parent"            androID:layout_gravity="start"            androID:choiceMode="singleChoice"            androID:divIDer="@androID:color/transparent"            androID:divIDerHeight="0dp"            androID:background="#111"/>    </linearLayout></androID.support.v4.Widget.DrawerLayout>

如果我删除linearlayout则没有错误.此按钮出现在ListvIEw后面,edittext出现在屏幕中间.问题是对象没有对齐.有没有办法在DrawerLayout中对齐视图对象？

如果我不删除linearlayout,我会收到此错误：

linearLayout$LayoutParams cannot be cast to androID.support.v4.Widget.DrawerLayout$LayoutParams

堆栈跟踪：

E/AndroIDRuntime(3454): FATAL EXCEPTION: main Process: com.brilliant.brIDge,PID: 3454 java.lang.classCastException:
androID.Widget.linearLayout$LayoutParams cannot be cast to
androID.support.v4.Widget.DrawerLayout$LayoutParams at
androID.support.v4.Widget.DrawerLayout.isDrawerVIEw(DrawerLayout.java:910)
at
androID.support.v4.Widget.DrawerLayout.isDrawerOpen(DrawerLayout.java:1156)
at
com.brilliant.brIDge.adminMessages.onPrepareOptionsMenu(adminMessages.java:220)
at androID.app.Activity.onPreparePanel(Activity.java:2556) at
com.androID.internal.policy.impl.PhoneWindow.preparePanel(PhoneWindow.java:464)
at
com.androID.internal.policy.impl.PhoneWindow.doInvalIDatePanelMenu(PhoneWindow.java:800)
at
com.androID.internal.policy.impl.PhoneWindow$1.run(PhoneWindow.java:221)
at
androID.vIEw.Choreographer$CallbackRecord.run(Choreographer.java:761)
at androID.vIEw.Choreographer.doCallbacks(Choreographer.java:574) at
androID.vIEw.Choreographer.doFrame(Choreographer.java:543) at
androID.vIEw.Choreographer$FramedisplayEventReceiver.run(Choreographer.java:747)
at androID.os.Handler.handleCallback(Handler.java:733) at
androID.os.Handler.dispatchMessage(Handler.java:95) at
androID.os.Looper.loop(Looper.java:136) at
androID.app.ActivityThread.main(ActivityThread.java:5017) at
java.lang.reflect.Method.invokeNative(Native Method) at
java.lang.reflect.Method.invoke(Method.java:515) at
com.androID.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.androID.internal.os.ZygoteInit.main(ZygoteInit.java:595) at
dalvik.system.NativeStart.main(Native Method)

public boolean onPrepareOptionsMenu(Menu menu) {    boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);    menu.findItem(R.ID.action_websearch).setVisible(!drawerOpen);    return super.onPrepareOptionsMenu(menu);}

解决方法 在xml文件中为linearLayout分配一个ID：

<linearLayout        androID:ID="@+ID/Drawerlinear"        androID:layout_wIDth="match_parent"        androID:layout_height="wrap_content"        androID:orIEntation="vertical">        <!-- YOUR ListVIEW IS HERE --></linearLayout>

然后在你的java类中,抛出这个linearLayout：

private linearLayout    Drawerlinear;

在OnCreate中你应该这样做：

Drawerlinear = (linearLayout) findVIEwByID(R.ID.Drawerlinear);

在你的onPrepareOptionMenu中,把这个：

public boolean onPrepareOptionsMenu(Menu menu) {    boolean drawerOpen = mDrawerLayout.isDrawerOpen(Drawerlinear);    menu.findItem(R.ID.action_websearch).setVisible(!drawerOpen);    return super.onPrepareOptionsMenu(menu);}

它应该解决你的问题.

总结

以上是内存溢出为你收集整理的LinearLayout $LayoutParams无法强制转换为android.support.v4.widget.DrawerLayout $LayoutParams全部内容，希望文章能够帮你解决LinearLayout $LayoutParams无法强制转换为android.support.v4.widget.DrawerLayout $LayoutParams所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。